Akademik Veri Yönetim Sistemi
1st International Multidiscipilinary Conference on Emerging Trends in Engineering Technology-2023 (1st IMCEET-2023), Khairpur, Pakistan, 9 - 11 Mayıs 2023, ss.11-18
In this study; Desert dust transported by atmospheric route to Erzurum city center between 20-26 May 2022 and desert dust precipitation have examined in detail. With the effect of the carried desert dust on the pm10 and pm2.5 values; The trajectories of the pollutants until they reach the measurement site on the day of high air pollution levels have determined using the HYSPLIT (Hybrid Single Particle Langrangian Integrated Trajectory) back-trajectory model.
HYSPLIT back-trajectory model is a model that calculates the trajectories that individual pollutant particles have followed in the past or will follow in the future. This model has developed by NOAA – ARL (National Oceanic and Atmospheric Administration Air Resources Laboratory). By considering backward trajectories, long-range pollutant transports have examined and comments have made about the current air quality in the Erzurum city.
In the city center; While pm2.5 can be measured at only one station (Tashan station) out of 5 air quality measurement stations, pm10 can be measured at all stations (Aziziye-Tashan-Center-Palandöken-Pasinler stations). When the measurements made in the last six months (January 2022-June 2022) at these stations are carefully examined; it has determined that there was a strong dust transport and precipitation to the city center on May 23, 2022. Among the 5 stations measuring particulate matter (pm), pm10 values increased in 4 stations (Aziziye-Taşhan-Palandöken-Pasinler stations) and pm2.5 values increased in one station (Taşhan station). With the help of the HYSPLIT back-trajectory model and by examining the 72-hour back-trajectories; it has been determined that the sources of these particles are the air masses coming to Eastern Anatolia from the desert regions of the countries located in the south of our country (Iraq-Jordan-Lebanon-Syria). It has determined that these air masses increased the pm10 and pm2.5 concentrations in the province. Desert dust transport is also supported by satellite photographs.